\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Intermediate outcomes PCA calcul: Averaged z-score indices}
\begin{tabular}{l*{6}{c}}
\toprule
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}\\
                    &\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Citizen\\knowledge\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}HC staff\\knowledge\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Efficacy\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Community\\responsibility\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}Relationship\end{tabular}}}&\multicolumn{1}{c}{\textbf{\begin{tabular}[c]{@{}c@{}}HC\\transparency\end{tabular}}}\\
\midrule
Full treatment      &      -0.106***&       0.175   &      -0.033   &      -0.017   &       0.079** &       0.018   \\
                    &     (0.032)   &     (0.140)   &     (0.036)   &     (0.027)   &     (0.035)   &     (0.115)   \\
Constant            &       0.052** &      -0.087   &       0.016   &       0.009   &      -0.041   &       0.005   \\
                    &     (0.023)   &     (0.096)   &     (0.024)   &     (0.019)   &     (0.025)   &     (0.079)   \\
\midrule
N                   &       7,288   &         187   &       7,288   &       7,288   &       7,288   &         187   \\
R$^{2}$             &       0.132   &       0.247   &       0.044   &       0.053   &       0.059   &       0.493   \\
\bottomrule
\end{tabular}
\end{table}
